Example usage for java.io InputStream read

Introduction

In this page you can find the example usage for java.io InputStream read.

Prototype

public int read(byte b[]) throws IOException

Source Link

Document

Reads some number of bytes from the input stream and stores them into the buffer array b.

Usage

From source file:Main.java

public static ByteArrayOutputStream toByteArrayOutputStream(InputStream is) throws IOException {
    final ByteArrayOutputStream baos = new ByteArrayOutputStream();
    final byte[] buffer = new byte[512];
    int length = 0;
    while ((length = is.read(buffer)) != -1) {
        baos.write(buffer, 0, length);//  ww  w  . ja  v a  2s . co m
    }

    return baos;
}

From source file:Main.java

public static long copy(InputStream input, OutputStream output) throws IOException {
    byte[] buffer = new byte[1024];
    long count = 0;
    int n = 0;/*w  w w  . j  a v  a2s.  co  m*/
    while (-1 != (n = input.read(buffer))) {
        output.write(buffer, 0, n);
        count += n;
    }
    return count;
}

From source file:Main.java

/**
 * Copy the content of the input stream into the output stream, using a
 * temporary byte array buffer whose size is defined by
 * {@link #FILE_BUFFER_SIZE}.//from  w w w  .  j  a v a 2s .  com
 * 
 * @param in
 *          The input stream to copy from.
 * @param out
 *          The output stream to copy to.
 * 
 * @throws java.io.IOException
 *           If any error occurs during the copy.
 */
public static void copyFile(InputStream in, OutputStream out, long length) throws IOException {
    long totalRead = 0;
    byte[] b = new byte[FILE_BUFFER_SIZE];
    int read;
    while ((read = in.read(b)) > 0) {
        out.write(b, 0, read);
        out.flush();

        totalRead += read;
        if (totalRead >= length)
            break;
    }
}

From source file:StreamUtils.java

public static byte[] readInByteArray(InputStream in) throws IOException {
    byte[] result = new byte[in.available()];

    in.read(result);

    in.close();//  w w  w  .j av  a  2 s. co  m

    return result;
}

From source file:Main.java

public static byte[] readInputStreamFully(InputStream is) {
    ByteArrayOutputStream os = new ByteArrayOutputStream();
    byte[] buffer = new byte[32768];
    int count;//  w  w  w .j a va2s .  co  m
    try {
        while ((count = is.read(buffer)) != -1) {
            os.write(buffer, 0, count);
        }
        is.close();
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
    return os.toByteArray();
}

From source file:Main.java

public static byte[] slurpToByteArray(InputStream inputStream) throws IOException {
    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    byte[] buffer = new byte[4096];
    for (int numRead; (numRead = inputStream.read(buffer)) != -1;) {
        outputStream.write(buffer, 0, numRead);
    }/*from w  w  w. j a va 2s  .co  m*/
    return outputStream.toByteArray();
}

From source file:Main.java

/**
 * Exhaust the content of the representation by reading it and silently
 * discarding anything read./*  ww  w.  j a  v a2  s . c  o  m*/
 * 
 * @param input
 *            The input stream to exhaust.
 * @return The number of bytes consumed or -1 if unknown.
 */
public static long exhaust(InputStream input) throws IOException {
    long result = -1L;

    if (input != null) {
        byte[] buf = new byte[2048];
        int read = input.read(buf);
        result = (read == -1) ? -1 : 0;

        while (read != -1) {
            result += read;
            read = input.read(buf);
        }
    }

    return result;
}

From source file:Main.java

/**
 * Copies all bytes from the input stream to the output stream.
 * Does not close or flush either stream.
 *
 * @param from the input stream to read from
 * @param to the output stream to write to
 * @return the number of bytes copied/* ww w  .  ja v a2s .c om*/
 * @throws IOException if an I/O error occurs
 */
private static long copy(InputStream from, OutputStream to) throws IOException {
    byte[] buf = new byte[8192];
    long total = 0;
    while (true) {
        int r = from.read(buf);
        if (r == -1) {
            break;
        }
        to.write(buf, 0, r);
        total += r;
    }
    return total;
}

From source file:Main.java

private static String isStreamString(InputStream is) {
    ByteArrayOutputStream bo = new ByteArrayOutputStream();
    byte[] buf = new byte[1024];
    int len = -1;
    try {/*from  w ww .  j  a  v  a 2 s.  c om*/
        while ((len = is.read(buf)) != -1) {
            bo.write(buf, 0, len);
        }
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } finally {
        if (is != null)
            try {
                is.close();
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
    }
    return replaceBr(new String(bo.toByteArray()));
}

From source file:Main.java

static long copy(InputStream from, OutputStream to, int bufferSize) throws IOException {
    byte[] buf = new byte[bufferSize];

    long total = 0;
    while (true) {
        int read = from.read(buf);
        if (read < 0)
            break;
        to.write(buf, 0, read);/* w w w  .j  a  v  a  2 s . c o  m*/
        total += read;
    }

    return total;
}